Hello.<br /> <br /> >You haven't really provided us with much detail here, but it kind of<br />>sounds like
yoursystem is overloaded.<br />>...Robert<br /> Thank you for your kindness.<br />Following modules are used <br
/> mod_auth_pgsql-2.0.3_1<br/> postgresql-client-8.3.9_1,1<br /> postgresql-server-8.3.9_1<br /> p5-DBD-Pg-2.16.0<br
/> php5-pdo_pgsql-5.2.12<br/> What kind of information shall, I geve you in addtion to the list<br />above?<br /> <br
/>>Date: Mon, 18 Jan 2010 15:33:02 -0500<br />> Subject: Re: [BUGS] BUG #5284: Postgres CPU 100% and worker took
toolong to start; cancelled... Systemdown<br />> From: robertmhaas@gmail.com<br />> To: azuneko@hotmail.com<br
/>>CC: pgsql-bugs@postgresql.org<br />> <br />> On Mon, Jan 18, 2010 at 12:43 AM, azuneko
<azuneko@hotmail.com>wrote:<br />> > The following bug has been logged online:<br />> ><br />>
>Bug reference: 5284<br />> > Logged by: azuneko<br />> > Email address:
azuneko@hotmail.com<br/>> > PostgreSQL version: 8.3.3<br />> > Operating system: FreeBSD7.0.2<br />>
>Description: Postgres CPU 100% and worker took too long to start;<br />> > cancelled... Systemdown<br
/>>> Details:<br />> ><br />> > Hello, <br />> ><br />> > I have the following 2
problems.<br/>> > It would be appreciated if you give me some information such as the way to<br />> > avoid
them.(Orif those problems are already known and fixed, could you<br />> > please tell me what version I should
apply.)<br/>> ><br />> > 1,CPU utilization of postgres reaches 100%.<br />> ><br />> > I
excuted"top" command and sometimes found that CPU utilization of postgres<br />> > process reached 100% or almost
100%.(This is similar to the problem that<br />> > was posted at<br />> >
http://archives.free.net.ph/message/20081104.074244.6e0dbcde.ja.html.)<br/>> > What might be the cause?<br />>
><br/>> > 2. The following warning can be seen in the postgres log.<br />> > WARNING: worker
tooktoo long to start; cancelled<br />> ><br />> > After this warning firstly appears in the log, the same
wariningmessage<br />> &g t; seems to be repeated. And if you leave this state as it is, the OS freezes<br
/>>> before long. I guess this event happens because the daemons related to<br />> > postgres (such as
vacuumand autovacuum) won't release the shared memory and<br />> > exclusively keep using it. Am I correct?<br
/>>><br />> > Those 2 problems are confirmed to happen at least under the following<br />> >
conditions;<br/>> > Software<br />> > -OS : FreeBSD 7.0.2<br />> > -Postgres
version: 8.3.3<br />> > Hardware<br />> > -Disk configuration : RAID5 (MegaCLI)<br />>
> -CPU : Xeon2.4<br />> ><br />> > Thank you.<br />> <br />> You haven't really provided us
withmuch detail here, but it kind of<br />> sounds like your system is overloaded.<br />> <br />> ...Robert<br
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